@Article{ Francoise_GARRIDO_GALLAVOTTI,

author = { Jean Pierre Francoise and PEDRO LUIS GARRIDO GALERA and GIOVANNI GALLAVOTTI } ,

title = { Pendulum, Elliptic Functions and relative cohomology   },

journal = { Journal of Mathematical Physics },

year = { 2010 },

volume = { 51 },

pages = { 032901 - },

doi = { http://lanl.arxiv.org/abs/0812.2402v1 },

}